CMMVC8482E The host cannot be removed because the host being deleted is mapped to volumes which have received I/O within the defined volume protection period.
Explanation
If volume protection is enabled, and the host being deleted is mapped to any volume that has received I/O within the defined volume protection time period, the host deletion command fails. This policing behavior protects I/O integrity.
This policing behavior:
- Does not occur when multiple hosts are mapped to the same volume, and the host being removed is already offline
- Is not overridden by using the force flag
- Prevents the last host being removed regardless of whether the host is online or not, which improves the policing behaviour for clustered hosts
User response
- Ensure that you intend to remove the host. If you selected the wrong host, repeat the command with the correct host.
- To remove the host, ensure that no host I/O is sent to any volume mapped to the host, wait the time that is specified in the vdisk_protection_time field in the lssystem command, then retry the volume removal command.
- Alternatively, to disable volume protection warnings and behavior, disable the vdisk_protection-enabled field using the chsystem command, then retry the host removal command.